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@InProceedings{AAMAS07-taylor,
author="Matthew E.\ Taylor and Shimon Whiteson and Peter Stone",
title="Transfer via Inter-Task Mappings in Policy Search Reinforcement Learning",
booktitle="The Sixth International Joint Conference on Autonomous Agents and Multiagent Systems",
month="May",year="2007",
abstract={ The ambitious goal of transfer learning is to
accelerate learning on a target task after training on
a different, but related, source task. While many past
transfer methods have focused on transferring
value-functions, this paper presents a method for
transferring policies across tasks with different
state and action spaces. In particular, this paper
utilizes transfer via inter-task mappings for policy
search methods ({\sc tvitm-ps}) to construct a
transfer functional that translates a population of
neural network policies trained via policy search from
a source task to a target task. Empirical results in
robot soccer Keepaway and Server Job Scheduling show
that {\sc tvitm-ps} can markedly reduce learning time
when full inter-task mappings are available. The
results also demonstrate that {\sc tvitm-ps} still
succeeds when given only incomplete inter-task
mappings. Furthermore, we present a novel method for
\emph{learning} such mappings when they are not
available, and give results showing they perform
comparably to hand-coded mappings. },
wwwnote={AAMAS-2007},
}